Hydrangeas are a favorite flower of many due to their beautiful, extravagant, season-long blooms. Did you know that you can change the color of your hydrangea? It all depends on the pH levels of the soil the flowers are living in. The more acidic the ground is, the bluer the flower will be. The more alkaline in the ground, the pinker the flowers will be, just like a pH test strip. Latin name: Hydrangea macrophylla Fun Facts: Hydrangeas can be poisonous. When consumed, the pl